class sever:
    pass

class makeorange(sever):
    def make(self):
        sever.__init__(self)
        print("生产桔子汽水")

class makeapple(sever):
    def make(self):
        sever.__init__(self)
        print("生产苹果汽水")

class makeshit(sever):
    def make(self):
        sever.__init__(self)
        print("生产shit")


def  makesever(obj):
    obj.make()


m1=makeorange()
m2=makeapple()
m3=makeshit()
makesever(m1)
makesever(m2)
makesever(m3)



'''
print(isinstance(makeorange(),sever))
print(isinstance(makeapple(),sever))
'''


